Wrench



Oct. 3, 1933. w PADGETT 1,928,843

WRENCH Filed June 6, 1931 Patented Oct. 3, 1933 UNITED STATES PATENTOFFICE My invention consists in a new and useful improvement in wrenchesand is designed to provide a wrench in which the curved jaws are causedto grip the rod or pipe on which the wrench is used by the manipulationof the handle. My improved wrench has one jaw pivotally mounted on thehandle and the second jaw pivotally mounted on the first jaw and havinga pivoted link connecting it with the handle. The particularly novelfeature of my invention is the means which I provide whereby the firstjaw may be adjustably pivoted on the handle so that the wrench may beadapted to operate upon rods or pipes of differing diameters. Aparticular ad- 15 vantage of my improved wrench is that the parts are sodesigned and disposed that the jaws may be brought into their severalopen positions to be applied to the work, while they are disposedalongside of the handle instead of extending beyond the handle, as inthe ordinary type of wrench. For working in constricted spaces, thisaffords a great improvement over the ordinary type.

I have illustrated in the drawing and have hereinafter fully'describedone specific embodiment of my invention, but it is to be distinctlyunderstood that I do not consider my invention limited to said specificembodiment, but refer for its scope to the claims appended hereto.

In the drawing:

Fig. 1 is a side elevation of my device.

Fig. 2 is a section on the line 22 of Fig. 1.

Fig. 3 is a section on the line 33 of Fig.1.

Fig. 4 is a section on the line 4-4 of Fig. 2.

My improved wrench has the handle 1 provided. at one end with a yoke 2in which is pivoted by the pin 3 one end of the link 4 having at itsother end the yoke 5 in which is pivoted by the pin 6 the arm 7 of thejaw 8 of the wrench. The other jaw 9 of the wrench has a yoke 10 inwhich is pivoted the arm '7 by the pin 11. The jaw 9 also has a yoke 12pivoted to the handle 1 by the pin 13. This yoke 12 is so designed anddisposed that the link 4 passes therethrough. The yoke 45 12 is providedon each of its arms with a series of circular holes 14 from which extendslots connected by the slot 16. It is to be noted, as clearly shown inFig. 4, that the round pin 13 is flattened on one side, at 17, thuspreventing rotation of the pin 13 in the handle 1. The holes 14 are of adiameter suflicient to allow the yoke 12 to move about the pin 13 whenthe pin 13 is in one of the holes 14, but the width of the slots 15 issuch that the yoke 12 must be moved to 55 bring the slots 15 in linewith the flattened side 17 to permit the pin 13 to pass through theslots 15.

From the foregoing description of the details of construction of mydevice, its use and operation will be obvious. The yoke 12 is adjustedrelative to the handle 1 to place the pin 13 in the proper hole 14 toposition the jaws 8 and 9 in such relation as to provide the properspace for the wrench to be applied to the particular rod or pipe to begripped. When the jaws 8 and 9 have been fitted about the rod or pipe,the handle 1 (as illustrated in Fig. 1) is moved toward the left, thusacting as a lever about the fulcrum provided by the pin 13, operatingthe link 4 and arm '7 to force the jaw 8 toward the jaw 9 to grip therod or pipe.

Having described my invention, what I claim 1s:

1. In a wrench, the combination of a handle; a jaw provided with a yokeabout said handle, each side of said yoke having a series of circularholes, the holes of the two series being aligned, a slot extending fromeach hole and a connecting slot for each series of slots; a pinnon-rotatably positioned in said handle and passing through said yoke,the yoke and pin being so designed and related that the yoke isrotatable about the pin when the pin is in any one of said holes, andnon-rotatable about said pin when the pin is in any one of said slots; asecond jaw pivoted to said first jaw; and a link pivoted to said secondjaw and said handle.

2. In a wrench, the combination of a handle; a bifurcated plate aboutsaid handle, each arm of said plate having a slot, a series of slotsextending therefromand a circular hole at the other end of each of theextension slots, the diameter of the holes being greater than the widthof the extension slots; a pin non-rotatably mounted in said handle so asto pass through the openings in the plate, said pin having suchconfiguration, in cross-section, as to permit the plate to rotate aboutthe pin when the pin is positioned in any one of the pairs of holes, andprevent the plate from rotating about the pin when the pin is posi- 100tioned in any one of the pairs of slots; a jaw on said plate; a secondjaw pivoted to said plate; and a link pivoted to said second jaw andsaid handle.

WILEY MARTIN PADGETT.

